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Micro and nano polyacrylonitrile fibers were modified to polyacrylonitrile-monoethanolamine (PAN-MEA) through reaction PAN with ethanolamine. The modified PAN fiber was prepared by conversion nitrile groups into hydroxyle groups using ethanolamine solution with different concentration under refluxing at 91°C. Modified raw acrylic fibers (RAF) with submicrometer diameters ranging from 120 to 300 nm were produced using electrospinning in N,N-dimethyl formamide (DMF). The PAN-MEA micro and nano fibers were examined as chelating material in a series of batch adsorption experiments for removal of Cu (II), Pb (II) and Ni (II) ions. The fiber structure has been investigated by different experimental techniques of characterization such as Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). Also, the physical and mechanical properties has been investigated in this study. Nano fibers show adsorption metal ions more than the usual fiber because of high ratio of surface to mass.
| Autoren: | Tabarzadi, M.; Abdouss, M.; Hasani, S. A.; Shoushtary, A. M. | |
| Journal: | Materialwissenschaft und Werkstofftechnik | |
| Band: | 41 | |
| Ausgabe: | 4 | |
| Jahrgang: | 2010 | |
| Seiten: | 221 | |
| DOI: | 10.1002/mawe.201000575 | |
| Erscheinungsdatum: | 01.04.2010 |
The unfolding landscape of the congenital myasthenic syndromes
Abstract Congenital myasthenic syndromes (CMS) are heterogeneous disorders in which the safety margin of neuromuscular transmission is impaired by one or more specific mechanisms. Since the advent of next‐generation sequencing methods, the discovery of novel CMS targets and phenotypes ha ... mehr
Passive transfer models of myasthenia gravis with muscle‐specific kinase antibodies
Abstract Myasthenia gravis (MG) with antibodies to muscle‐specific kinase (MuSK) is characterized by fluctuating fatigable weakness. In MuSK MG, involvement of bulbar muscles, neck, and shoulder and respiratory weakness are more prominent than in acetylcholine receptor (AChR) MG. MuSK au ... mehr
Abstract Because of the failure of many promising therapeutics identified in preclinical evaluation, funding sources have established guidelines for increased rigor in animal evaluations. The myasthenia gravis (MG) community of scientists has developed guidelines for preclinical assessme ... mehr
Wiley ermöglicht Zugriff auf SpecInfo über Wiley InterScience
John Wiley & Sons, Inc. stellt die Datenbank SpecInfo erstmals über die dynamische Internet-Plattform Wiley InterScience online zur Verfügung. Mit über 434 000 regelmäßig gepflegten Einträgen gehört SpecInfo zu den weltweit größten Spektrensammlungen. SpecInfo bietet dem Benutzer eine int ... mehr
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